Villagers now have additional professions, and will harvest crops and breed. To encourage that kind of behaviour, give them 3 bread, 12 carrots, or 1 potato. They’ll also turn into Witches when struck by lightning.

Now any rectangular shape from 4x5 to 23x23 will work as a Nether Portal. Ghasts can travel through them too.

You can use Pumpkins or Wither Skeleton Skulls to spawn Golems and Withers.